Most of the available knowledge in the literature on Mexican fishes and their parasites refers to information within political divisions and/or hydrological basins in the country. Indeed, only a few studies have analyzed the helminth fauna of these vertebrates as a biological group distributed nation-wide. This lack of available knowledge prevents the study of several basic and applied aspects involving fish–parasite interactions at different spatial and temporal scales. In this dataset, we compiled all the available geographic information on fish–helminth parasite interactions involving native and exotic fish species recorded in continental waters throughout the Mexican territory. After an exhaustive filtering and the curation of information, our data set contains 5999 records of 361 freshwater fish species (roughly 70% of known freshwater fish species occurring in Mexico) and 483 endo- and ectoparasitic helminths collected over an 85-year period (from 1936–2021) in 1070 localities distributed throughout Mexico. These records are mainly concentrated in only a few states located to the south and east of the country; although all states have been sampled and all major basins in Mexico are represented. The fish order with the highest number of records was Perciformes (n = 2325, 38.75%) while the fish family with the highest number of records was Cichlidae (n = 1741, 29.02%). Native species of fishes corresponded to 92.14% of the records (n = 5528) and fish-associated parasites were found in 41 habitat types in/on their host bodies. Regarding fish parasites, we found that most of the records are from the phylum Platyhelminthes (n = 4495, 74.92%). At the class level, we observed that Trematoda reached the highest number of records (n = 2965, 49.42%). Moreover, we found that Diplostomidae (n = 917, 15.25%) were the family of trematodes with the highest number of records. Most parasites were registered in their adult stage (n = 3730, 62.17%), followed by larval stages (n = 2267, 37.78%). We hope that the fish–parasite interactions data set will encourage researchers worldwide to explore different ecological and coevolutionary aspects of fishes and their helminth parasites, as well as provide useful information for the better implementation of conservation initiatives. There are no copyright restrictions; please cite this data paper when using its data in publications or teaching events.

中文翻译：

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鱼类与寄生虫的相互作用：墨西哥大陆水域的数据集，涉及鱼类及其寄生虫动物群

关于墨西哥鱼类及其寄生虫的文献中的大部分可用知识是指该国政治部门和/或水文流域内的信息。事实上，只有少数研究将这些脊椎动物的蠕虫动物群作为分布在全国范围内的生物群进行了分析。可用知识的缺乏阻碍了对涉及不同空间和时间尺度的鱼类-寄生虫相互作用的几个基本和应用方面的研究。在此数据集中，我们汇编了所有可用的关于鱼类-蠕虫寄生虫相互作用的地理信息，涉及在整个墨西哥领土的大陆水域中记录的本地和外来鱼类。经过详尽的过滤和信息整理后，我们的数据集包含 361 种淡水鱼的 5999 条记录（约占墨西哥已知淡水鱼的 70%），以及 85 年期间（1936 年至 2021 年）在墨西哥各地 1070 个地点收集的 483 条体内和体外寄生虫. 这些记录主要集中在该国南部和东部的少数几个州；尽管所有州都已被抽样并且墨西哥的所有主要盆地都有代表。记录数最多的鱼目是鲈形目（尽管所有州都已被抽样并且墨西哥的所有主要盆地都有代表。记录数最多的鱼目是鲈形目（尽管所有州都已被抽样并且墨西哥的所有主要盆地都有代表。记录数最多的鱼目是鲈形目（n  = 2325, 38.75%) 而记录数最多的鱼科是丽鱼科 ( n  = 1741, 29.02%)。本地鱼类物种对应于 92.14% 的记录 ( n  = 5528)，并且在宿主体内/体表的 41 种栖息地类型中发现了与鱼类相关的寄生虫。关于鱼类寄生虫，我们发现大部分记录来自扁形动物门（n  = 4495，74.92%）。在类级别，我们观察到吸虫达到了最高记录数（n  = 2965，49.42%）。此外，我们发现双口吸虫科（n  =917，15.25%）是记录数最多的吸虫科。大多数寄生虫在成虫阶段登记（n = 3730, 62.17%)，其次是幼虫阶段 ( n  = 2267, 37.78%)。我们希望鱼类与寄生虫相互作用的数据集将鼓励全世界的研究人员探索鱼类及其寄生虫的不同生态和共同进化方面，并为更好地实施保护计划提供有用的信息。没有版权限制；在出版物或教学活动中使用其数据时，请引用此数据文件。